@meterio/flex-framework
Version:
A library implements Meter Flex interface
167 lines • 13.4 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Driver = void 0;
const driver_no_vendor_1 = require("./driver-no-vendor");
const transaction_1 = require("@meterio/devkit/dist/transaction");
const certificate_1 = require("@meterio/devkit/dist/certificate");
const blake2b_1 = require("@meterio/devkit/dist/cry/blake2b");
const crypto_1 = require("crypto");
const options_1 = require("./options");
/** class fully implements Flex.Driver */
class Driver extends driver_no_vendor_1.DriverNoVendor {
constructor(net, genesis, initialHead, wallet) {
super(net, genesis, initialHead);
this.wallet = wallet;
/** params for tx construction */
this.txParams = {
expiration: 18,
gasPriceCoef: 0,
};
}
/**
* create driver instance
* it will fetch config(genesis, head) via net as construction params
* @param net
* @param wallet
*/
static connect(net, wallet) {
return __awaiter(this, void 0, void 0, function* () {
const genesis = yield net.http('GET', 'blocks/0');
const best = yield net.http('GET', 'blocks/best', {
validateResponseHeader: (headers) => {
const xgid = headers['x-genesis-id'];
if (xgid && xgid !== genesis.id) {
throw new Error(`responded 'x-genesis-id' not matched`);
}
},
});
return new Driver(net, genesis, {
id: best.id,
number: best.number,
timestamp: best.timestamp,
parentID: best.parentID,
epoch: best.epoch,
}, wallet);
});
}
signTx(msg, option) {
return __awaiter(this, void 0, void 0, function* () {
const key = this.findKey(option.signer);
const clauses = msg.map((c) => ({
to: c.to,
value: c.value,
data: c.data,
token: c.token,
}));
const gas = option.gas || (yield this.estimateGas(clauses, key.address));
const txBody = {
chainTag: Number.parseInt(this.genesis.id.slice(-2), 16),
blockRef: this.head.id.slice(0, 18),
expiration: this.txParams.expiration,
clauses,
gasPriceCoef: this.txParams.gasPriceCoef,
gas,
dependsOn: option.dependsOn || null,
nonce: '0x' + crypto_1.randomBytes(8).toString('hex'),
};
let tx;
if (option.delegationHandler) {
const delegatedTx = new transaction_1.Transaction(Object.assign(Object.assign({}, txBody), { reserved: { features: 1 /* vip191 */ } }));
const originSig = yield key.sign(delegatedTx.signingHash());
try {
const result = yield option.delegationHandler({
raw: '0x' + delegatedTx.encode().toString('hex'),
origin: key.address,
});
delegatedTx.signature = Buffer.concat([
originSig,
Buffer.from(result.signature.slice(2), 'hex'),
]);
tx = delegatedTx;
}
catch (err) {
if (!options_1.options.disableErrorLog) {
// tslint:disable-next-line: no-console
console.warn('tx delegation error: ', err);
}
// fallback to non-vip191 tx
}
}
if (!tx) {
tx = new transaction_1.Transaction(txBody);
tx.signature = yield key.sign(tx.signingHash());
}
const raw = '0x' + tx.encode().toString('hex');
if (this.onTxCommit) {
this.onTxCommit({
id: tx.id,
raw,
resend: () => __awaiter(this, void 0, void 0, function* () {
yield this.sendTx(raw);
}),
});
}
yield this.sendTx(raw);
return {
txid: tx.id,
signer: key.address,
};
});
}
signCert(msg, options) {
return __awaiter(this, void 0, void 0, function* () {
const key = this.findKey(options.signer);
const annex = {
domain: 'localhost',
timestamp: this.head.timestamp,
signer: key.address,
};
const unsigned = certificate_1.Certificate.encode(Object.assign(Object.assign({}, msg), annex));
const signature = yield key.sign(blake2b_1.blake2b256(unsigned));
return {
annex,
signature: '0x' + signature.toString('hex'),
};
});
}
isAddressOwned(addr) {
return Promise.resolve(this.wallet
? this.wallet.list.findIndex((k) => k.address === addr) >= 0
: false);
}
findKey(addr) {
if (this.wallet) {
const keys = this.wallet.list;
const key = addr ? keys.find((k) => k.address === addr) : keys[0];
if (key) {
return key;
}
}
throw new Error('empty wallet');
}
sendTx(raw) {
return this.httpPost('transactions', { raw });
}
estimateGas(clauses, caller) {
return __awaiter(this, void 0, void 0, function* () {
const outputs = yield this.explain({
clauses,
caller,
}, this.head.id);
const execGas = outputs.reduce((sum, out) => sum + out.gasUsed, 0);
const intrinsicGas = transaction_1.Transaction.intrinsicGas(clauses);
return intrinsicGas + (execGas ? execGas + 15000 : 0);
});
}
}
exports.Driver = Driver;
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